删除领导和对立 <br> 从字符串

Question

I have <br> inserted into a string using some logic in typescript. I wanted to remove the <br> at the begining and end of the string. Others should remain as it. What is the best way to achieve?

I achieved it using mystring.substring(mystring.indexOf('<br>'),mystring.lastIndexOf('<br>'))

Want to know if its the optimum way of doing this.

Its a little more complicated.. Should replace all the
in the starting of the string and ending of the string.

<br><br>hello<br>user<br><br><br> should return hello<br>user

Answer 1

To do exactly that, you can use this (confirmed locally),

mystring.replace(/(^(<br>)+)|((<br>)+$)/g, '')

See this for more info. Hope it helps.